package com.changgou.system;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.gateway.filter.ratelimit.KeyResolver;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@SpringBootApplication
@EnableEurekaClient //eureka客户端
public class GatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(GatewayApplication.class, args);
    }
    //定义一个bean

    /**
     * KeyResolver用于计算某一个类型的限流的KEY也就是说，可以通过KeyResolver来指定限流的Key
     * @return
     */
    @Bean
    public KeyResolver ipKeyResolver() {
        return new KeyResolver() {
            @Override
            public Mono<String> resolve(ServerWebExchange exchange) {
                return Mono.just(exchange.getRequest().getRemoteAddress().getHostName());
            }
        };
    }
}
